Sweet, I'm a big Orb fan since I became aware of it the first time early last year and it's always appreciated if there is a new version released, to improve and enhance the functionalities.
If you are not aware about Orb - it's a free service which lets you access you home PC from virtually any PC and mobile device (including Pocket PCs, Smartphone and 3G terminals) to get your music and video collections streamed, to view your stored photos and to watch live TV via streaming (video and TV streaming requires WMV, Real or 3GPP compatible devices).
In addition Orb provides many more features, including a free Skype voice mail, etc.

Now Orb Networks has released a new major version of the Orb PC build
(which is installed on your home PC) which includes:

New FileBrowser Add-On: access all file types on your Orb PC

Improved support for non-MPEG2 tuners: TV streaming in 3GP; fix for
recordings never ending; fix for webcam conflict

Improved support for DVB-T tuning and Orb channel scan (non-US)

New OrbStreamer: fix cut-off of few seconds of audio files in beginning
of stream

Restore MCE services after releasing the tuner: fix conflict where MCE
never recovered if used while Orb was accessing the tuner

While I still not get DVB-T working (unfortunately, therefore I can not use Orb to get my DVB-T TV streamed to my PC) I still have hope to get a supported (and working) DVB-T implementation sooner or later.
However, I'm currently trialing a non-public IPTV Beta and I can tell you that Orb helps here a lot. Better install Orb today if you plan to use IPTV sooner or later too.